(c) Payment of Taxes. Lessee will pay or cause to be paid all Taxes (including but not limited to any withholding tax imposed under Applicable Law on Rent payments made to Lessor hereunder, but excluding any sales tax payable in connection with the purchase or sale of the Aircraft by Lessor, or any successor to Lessor) assessments and governmental charges or levies imposed upon it, the Lessor, and the Aircraft and its use and operation (including all landing fees, customs duties, airport fees and the like), arising out of the use and operation of the Aircraft, or upon Lessee's income or profits, or upon any property belonging to it, prior to the date on which the same, if not paid, would give rise to a Lien (other than a Lien permitted by Section 14 hereof) upon the Aircraft, including the Airframe, the Engines or any of the Parts thereof. Lessee shall promptly pay any and all such Taxes as and when the same are due, and Lessee, on reasonable demand from time to time, shall provide written evidence to Lessor that it has paid, or set aside adequate reserves to pay, any Taxes so imposed; provided, however, that Lessee shall have the right, at its own expense, if so permitted by Applicable Law, to contest in good faith the imposition of any and all such Taxes by appropriate procedures and in any reasonable manner that does not impose a material risk of loss, seizure, confiscation or detainment of the Aircraft, the Airframe, any Engine or any Part. Lessee will not be obligated to pay any Taxes measured by the gross annual income or profits of Lessor or Lessor's Lender.


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 (d) Place of Business. Lessee will not, without prior written notice to Lessor, change its principal place of business or chief executive office if there is more than one place of business.